Stimulated Rayleigh-Bragg scattering in two-photon absorbing media

Guang S. He; Changgui Lu; Qingdong Zheng; Paras N. Prasad; Petros Zerom; Robert W. Boyd; Marek Samoc

doi:10.1103/PhysRevA.71.063810

Stimulated Rayleigh-Bragg scattering in two-photon absorbing media

Guang S. He^*, Changgui Lu, Qingdong Zheng, Paras N. Prasad, Petros Zerom, Robert W. Boyd, Marek Samoc

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

The origin and mechanism of backward stimulated Rayleigh scattering in two-photon absorbing media are studied theoretically and experimentally. This type of stimulated scattering has the unusual features of no frequency shift and low pump threshold requirement compared to all other known stimulated scattering effects. This frequency-unshifted stimulated Rayleigh scattering effect can be well explained by a two-photon-excitation-enhanced Bragg grating reflection model. The reflection of the forward pump beam from this stationary Bragg grating may substantially enhance the backward Rayleigh scattering beam, providing a positive feedback mechanism without causing any frequency shift. A two-counterpropagating-beam-formed grating experiment in a two-photon absorbing dye solution is conducted. The measured dynamic behavior of Bragg grating formation and reflectivity properties are basically consistent with the predictions from the proposed model.

Original language	English
Article number	063810
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	71
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.71.063810
Publication status	Published - Jun 2005

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title = "Stimulated Rayleigh-Bragg scattering in two-photon absorbing media",

abstract = "The origin and mechanism of backward stimulated Rayleigh scattering in two-photon absorbing media are studied theoretically and experimentally. This type of stimulated scattering has the unusual features of no frequency shift and low pump threshold requirement compared to all other known stimulated scattering effects. This frequency-unshifted stimulated Rayleigh scattering effect can be well explained by a two-photon-excitation-enhanced Bragg grating reflection model. The reflection of the forward pump beam from this stationary Bragg grating may substantially enhance the backward Rayleigh scattering beam, providing a positive feedback mechanism without causing any frequency shift. A two-counterpropagating-beam-formed grating experiment in a two-photon absorbing dye solution is conducted. The measured dynamic behavior of Bragg grating formation and reflectivity properties are basically consistent with the predictions from the proposed model.",

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AU - He, Guang S.

AU - Lu, Changgui

AU - Zheng, Qingdong

AU - Prasad, Paras N.

AU - Zerom, Petros

AU - Boyd, Robert W.

AU - Samoc, Marek

PY - 2005/6

Y1 - 2005/6

N2 - The origin and mechanism of backward stimulated Rayleigh scattering in two-photon absorbing media are studied theoretically and experimentally. This type of stimulated scattering has the unusual features of no frequency shift and low pump threshold requirement compared to all other known stimulated scattering effects. This frequency-unshifted stimulated Rayleigh scattering effect can be well explained by a two-photon-excitation-enhanced Bragg grating reflection model. The reflection of the forward pump beam from this stationary Bragg grating may substantially enhance the backward Rayleigh scattering beam, providing a positive feedback mechanism without causing any frequency shift. A two-counterpropagating-beam-formed grating experiment in a two-photon absorbing dye solution is conducted. The measured dynamic behavior of Bragg grating formation and reflectivity properties are basically consistent with the predictions from the proposed model.

AB - The origin and mechanism of backward stimulated Rayleigh scattering in two-photon absorbing media are studied theoretically and experimentally. This type of stimulated scattering has the unusual features of no frequency shift and low pump threshold requirement compared to all other known stimulated scattering effects. This frequency-unshifted stimulated Rayleigh scattering effect can be well explained by a two-photon-excitation-enhanced Bragg grating reflection model. The reflection of the forward pump beam from this stationary Bragg grating may substantially enhance the backward Rayleigh scattering beam, providing a positive feedback mechanism without causing any frequency shift. A two-counterpropagating-beam-formed grating experiment in a two-photon absorbing dye solution is conducted. The measured dynamic behavior of Bragg grating formation and reflectivity properties are basically consistent with the predictions from the proposed model.

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DO - 10.1103/PhysRevA.71.063810

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JF - Physical Review A - Atomic, Molecular, and Optical Physics

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Stimulated Rayleigh-Bragg scattering in two-photon absorbing media

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